Sugar-cane mill.



J. OGG. SUGAR CANE MILLL APPLICATION FILED MAY 2. 191:1

mi on.

JAMES OGG, 0F PAHAJEA, TERRITORY OF HAWAII.

SUGAR-CANE MILL.

Specification of Letters Patent.

Application filed May 2, 1914. Serial No. 835,908.

To aZZ whom t may concern:

Be it known that I, JAMES OGG, a subject of the King of Great Britain, residing at Pahala, in the county of Hawaii and Territory of Hawaii, have invented certain new and useful Improvements' in Sugar-Cane Mills; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled inthe art to which it appertains to make and use the same.

This invention relates to improvements in sugar-cane mills, and particularly to such mills having three rollers in triangular arrangement. Its object is to increase the work performed by such mills and their efficiency.

Since the recent introduction of deep, narrow grooving for rolls, the feed roller of a three roller sugar-cane mill thus grooved can be set closer to the top roller than heretofore, as the rollers` with such grooving take the feed even when they are set closely together. Consequently these rollers now express a large proportion of the juice in the cane or bagasse passed between them. fThese rollers, therefore, now do the work which hasusually been done by the top roller and the discharge roller, thus leaving little work for the-latter roller to do.

The present invention contemplates a novel means for applying maceration liquid, through the toe or blade of the returner bar, to tlie bagasse discharged from between the top roller and the feed roller of a sugarcane mill, and particularly of a mill having the roll grooving mentioned. This maceratio-n liquid, either hot water or diluted juice, takes up sucrose from the bagasse, and together with a percentage of the juice in the bagasse is expressed when this macerated bagasse passes between thetop roller and the discharge roller, thus giving work for these rollers to-perform. As a result, the capacity of the mill is increased, the effect being almost equivalent to the addition yof another mill.v As the juice from the cane or bagasse expressed by the feed roller is richer in sucrose than that expressed from the bagasse. by the discharge roller, these yjuices, may be caught and strained separately, in order that the weaker or diluted juice may` be used for maceration in connection ywith a previous mill in the train.

. after described blade rearward of its toe.

A fourth roller has heretofore been added on the discharge end of three roller sugarcane mills, to increase the efficiency of the mill. The present invention, however, contemplates a simple and effective means for applying a fourth roller with hydraulics to an existing three roller sugar-cane mill.

rateateaaaa. 1e', 19151 This invention further contemplates, when i a fourth roller is employed, a'returner-bar above the discharge roller and forward of the fourth roller, with means to cause'its toe to bear against the top roller, and also means for applying maceration liquid through 'the blade or toe of said returnerbar. The bagasse discharged from between the top roller and the discharge roller is thus macerated during its passage under this returner-bar. The maceration liquid, which takes up sucrose in this bagasse, is eX- pressed when this `macerated bagasse passes between the fourth roller and the discharge roller. The resulting juice may, when low insucrose, be applied for macerating the bagasse in other mills in the train.

The invention consists in the novel combination and arrangement of parts as hereinand claimed.

he accompanying drawing, forming a part of this specification, illustrates in side elevation a three roller sugar-cane mill embodying my improvements.

Referring to the drawing, l represents the housing, 2 the top roller, 3 the feed roller, and 4 the discharge roller, respectively, of a three roller sugar-cane mill.

The blade 5 of its returner-bar is provided with a plurality of holes 6 through the The lower end of each hole 6 is threaded to receive a pipe 7. Each pipe 7 is connected by a union 8 to a nipple in the header or manifold 10. I

make these holes 6 one-quarter of an inch in diameter, spaced about one and one-half inches apart, and the pipes 7 of one-eighth inch pipe, although I do not confine myself to these sizes, which may be altered t0 suit the conditions. The maceration liquid, supplied under pressure through the manifold 10, passes successively through the nipples 9, the pipes 7, and the holes 6, into the bagasse passing over the blade 5 of the return'er-bar. Grooves -1l may be provided in the top of the blade 5, rearward from each hole 6, in order that trash may be swept 'and prevent the holes rearward with the bagasse on the blade 5 6 from becoming plugged therewith.

The fourth roller 12 is similarto the lower rollers of the mill.

The teats 12a on the ends of the shaft of the roller 12 are adapted to revolve in the brasses 13. rI'he teats 4'l on the ends of the shaft of the discharge roller 4 are provided with similar brasses 14. The bolts 15 16 connect the upper bridle plate 17 and the lower bridle plate 18. The hydraulic jack 19 with its plunger 20 is inter posed between the brass 14 and the ylower bridle plate 18. A dowel or'boss 13 on` the brass 13, 19tL on the hydraulic jack 19, and 20a on the plunger 20, fit corresponding holes in the upper bridle'plate 17, inthe brass 14, and in the lower bridle plate 18, respectively, to preserve alinement. Ilhe pipe 21 connects the hydraulic jack. 19 with the pipe 22, which connects the iaclrs of the three roller mill with their accumulator. rlhe area of the jacks 19 may be onlyA about one-ifth that of the jacks of the three roller mill. A. strap 23, of flexible material such as spring steel plate', is provided for each side of the mill to connect the upper end of the bolt 15 with the upper end of the rear hing bolt 24 of theA mill. The bolts 15 and 24 pass through holes in the strap 23, the straps being clamped between the nuts of said bolts and the bridle plates, as shown. The pinion of the roller 12 meshes with that of the discharge roller 4, so that the roller 12 is thus driven by the discharge roller 4. After the position of the roller 12 has been determined, with a suitable opening this roller and the discharge roller 4, babbitt is run in between the journals 12b `of the roller 12 and the housings 1, to form bearings 25, as shown. The journals 12b of the roller l2 thus revolve in the babbitted bearu ings 25 when the mill is running light or without cane, and the approach of the roller 12 toward the discharge roller 4 is thus limited.

The returner-bar 26 is located above the discharge roller 4 and forward of the fourth roller 12, as shown. By tightening the nut 27 on the bolt 28, which passes through the pin 29 in the housing 1, the lever 30 may be pulled, and thus cause the toe of thereturner -bar 26 to press against the top roller 2.

' The returner-bar 26 is provided with a plurality of holes 31 through its blade near its toe, as shown. A pipe 32 screwed into each hole 31 is connected by a union 33 with a nipple 34 in the manifold 35. Grooves 36 may be provided in the 'returner-bar 26. This arrangement is similar to that previcusly described, but'inverted, as shown.4

The pipe 37, rearward of the returner-bar 26 and provided with holes and connected to a pump, may be employed to withdraw between the expressed juice whichis forced forward when the macerated bagasse passes between the fourth roller 12 'and' the discharge roller 4. l claim:

1. In a sugar-cane mill, a returuer-bar provided with a plurality of holes through its blade near its toe, a manifold, and pipes connecting said holes .withl the manifold,

substantially as and for the purpose described. f

2. 1n a sugar-cane mill, a returner-bar, a plurality of holes through thebladeV of the returner-bar, a manifold, pipes connecting said holes with said manifold, and grooves in the blade rearward from said holes, substantially as and for the purpose described.

3. ln a sugar-cane mill, the combination with three rollers in triangular ment, ,of a fourth the dischargeroller, a returner-bar above the discharge, roller and forward of the fourth roller, means for pressing the toe of the re- `turner-bar against the top roller, and means for applying maceration liquid through said returner-bar near its toe, substantially as described.

4. 1n a sugar-cane mill, the combination with three rollers in triangular arrangement, of a fourth roller, a returner-bar forward of the fourth roller, means for pressing the toe of the returner-bar against the top roller, said returner bar provided with a plurality of holes therein anda plurality of grooves, a manifold, and pipes connecting each of said holes with the manifold.

5. ln a sugar-cane mill, the combination with three rollers in triangular arrangb-A ment, of a fourth roller coperatingwith the discharge roller, two bridle plates, bolts connecting the same, brasses in which the teats of the fourth roller and of the discharge roller are journaled, and a hydraulic jack with its plunger interposed between one o the said bridle plates and one of said brasses, substantially as described 6. In a sugar-cane mill, "the combination with three rollers, ,of a' fourth roller, two bridle plates, bolts connecting the same, brasses between said bolts in which the teats of the fourth roller and of the discharge roller are journaled, a hydraulic jack with its plunger between one of the bridle plates and one of the brasses, and a flexible strap connecting one of said bolts with the top of the mill, substantially as described.

7. In asugar-cane mill, a housing, four rollers, two bridle plates, bolts connecting the same, brasses between said bolts in which the teats of two of the hydraulic j ack with plunger between one of the brasses and one of the bridle plates, and a babbitted bearing on the housing adapted to fit the io'urnal of the fourth roller, substantially as described.

arrangeroller coperating with rollers are journaled, a

8. In a sugar cane mill, a returner bar roller, and means for supplying maceration 10 provided with a plurality of holes therein, liquid through the returner har, substanand means to supply maceration liquid tially as described.

through said holes. In testimony whereof I afHX my signature, 5 9. In a sugar cane mill, the combination in presence of tivo Witnesses.

with three rollers in triangular arrange- JAMES OGG.

ment, of a fourth roller cooperating with the Witnesses:

discharge roller, a returner bar. above the j DAVID JAMIEsoN,

discharge roller and forward of the fourth LAURENCE C. PALMER. 

